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Geotechnical Investigation on Compacted Clay Liner Blended with Reactive Material

  • Polapala Sai Pradeep
  • Mayakrishnan Muthukumar
  • Sanjay Kumar Shukla
Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)

Abstract

Clays are used for the construction of waste containment barriers, mainly because of its low hydraulic conductivity. In general, at several places, it may not be possible to obtain the clay satisfying the essential requirements as a liner material. Hence at many places commercially available bentonites is often used for the construction of clay liners. Bentonite undergoes significant changes in volume upon saturation. Several physical and chemical stabilization methods are in practice to stabilize the bentonite. Previous studies report that contaminants with high concentrations attack the clay minerals leading to an increase in their permeability. Exfoliated vermiculite, finds several applications in construction industry, and it is also found to be good absorbent material. Hence this study has been carried out to find the optimal percentage of vermiculite that can be added to the bentonite so that it satisfies the essential requirements of clay liners and it can also absorb the heavy metals from the contaminants. The tests for index properties and engineering properties of bentonite-vermiculite mixtures were performed. The test results show that 30% of vermiculite can be added to bentonite, so that the essential requirements of the liner can be maintained.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Polapala Sai Pradeep
    • 1
  • Mayakrishnan Muthukumar
    • 1
  • Sanjay Kumar Shukla
    • 2
  1. 1.Department of Structural and Geotechnical Engineering, School of Civil and Chemical EngineeringVIT UniversityVelloreIndia
  2. 2.Discipline of Civil and Environmental Engineering, School of EngineeringEdith Cowan UniversityPerthAustralia

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